After two disastrous housesitting incidents in which she unwittingly became embroiled in murder and mayhem, Thea Osbourne is only too happy to have a bit of peace and quiet. The only positive thing that came out of her experiences is her blossoming relationship with DI Phil Hollis and she relishes the thought of their spending some quality time together. Even meeting Phil's childhood acquaintance, the eccentric Ariadne, cannot detract from Thea's happiness.

But the bad luck that plagues the hapless Thea and her beloved spaniel Hepzipah is never far away. With autumn drawing in, preparations for Samhain, or Halloween, are well underway when Ariadne discovers a very tangible reminder of the season of death on Notgrove Barrow: a body laid out like a sacrificial victim. Unlikely companions, Thea and Ariadne are thrown together as they try to uncover the events that led to the fatality.